No prep (except where specified). No battlefield removal. No holding back. All characters in classic incarnations. Assume all teams work together. Assume everyone has general knowledge of their opponents' abilities. 1 minute of rest between fights. You get to choose when to implement the following options: Superman can sundip only for 1 round. Wonder Woman can get her sword and armor only for 1 round. Batman can have 24 hours of prep only for himself in the Batcave only against opponents of 1 round. How far does the JLA get?

Against these 4 villains the JLA have their hands full from the jump. This a tough match up for the JLA. If no BFM the JLA they may lose the first round against classic Juggernaut and his force field. Unless The JLA will have to get that helmet off otherwise they can't put him down. With Apocalypse and Exodus running the JLA will hard pressed. If MM can mind zap Jugs then they have a shot but lose a team member. Aquaman or Bats will go down here with just a minute rest.

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2. X-Men: Rogue, Storm, Colossus, Wolverine

This may be the only breather the JLA gets but has the potential to lose as well. If Rogue touches anyone the JLA is lost. They move on from here depending on if Rogue and Storm bring their A game.

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3. Heralds: Stardust, Terrax the Tamer, Firelord, Air-Walker

A very tough fight for the team and with just 1 minute from the last fight this one will take the team to the max. Supes will have to Sundip and WW get her equipment but they lose MM due to Firelord. If the Hearalds take to space the JLA is toast.

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4. Guardians of the Galaxy: Angela, Gamora, Groot, Drax the Destroyer

Slight breather but Angela makes them work for it especially WW. Supes can take on the rest of this team alone giving Bats a rest

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5. Defenders: Silver Surfer, Dr. Strange, Hulk, Namor

With just minute from the last the the JLA is starting to feel it. Batman will have to prep to face the Surfer or Dr. Strange. Since this is classic Dr. Strange I don't see the JLA getting past this group even with prep from Batman. If they do by chance get past the Defenders then the JLA will lose Batman and GL.

At this point the team is spent. With GL gone Superman with have contend with a flying Hercules type in Gil and WW has her hands full with Hercules. Quasar and Carol take out Flash with Supes losing to Gil and WW getting dogpiled. Fights over.

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7. Avengers: Sentry, Blue Marvel, Hyperion, Sersi

If the JLA gets this far they'll lose at this round. Too much power here for a fresh team.